US7004729B2 - Compressor with pot-shaped housing and housing sealing cover - Google Patents

Compressor with pot-shaped housing and housing sealing cover Download PDF

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Publication number
US7004729B2
US7004729B2 US10/722,956 US72295603A US7004729B2 US 7004729 B2 US7004729 B2 US 7004729B2 US 72295603 A US72295603 A US 72295603A US 7004729 B2 US7004729 B2 US 7004729B2
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US
United States
Prior art keywords
housing
compressor
recited
cover
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US10/722,956
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English (en)
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US20040191080A1 (en
Inventor
Georg Weber
Peter Barth
Jean-Claude Gnaly
Volker Seipel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LuK Fahrzeug Hydraulik GmbH and Co KG
Original Assignee
LuK Fahrzeug Hydraulik GmbH and Co KG
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Assigned to LUK FAHRZEUG-HYDRAULIK GMBH & CO. KG reassignment LUK FAHRZEUG-HYDRAULIK GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GNALY, JEAN-CLAUDE, SEIPEL, VOLKER, BARTH, PETER, WEBER, GEORG
Publication of US20040191080A1 publication Critical patent/US20040191080A1/en
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Publication of US7004729B2 publication Critical patent/US7004729B2/en
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1081—Casings, housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/125—Cylinder heads

Definitions

  • the present invention relates to a compressor, in particular for air conditioning systems in motor vehicles, having a housing and a housing sealing cover, a drive shaft including bearings, a drive mechanism for pistons which move back and forth and convert the rotational movement of the drive shaft into a reciprocating movement of the pistons, a cylinder block in which the reciprocating pistons aspirate and compress a coolant, a valve device such as a valve plate having intake and discharge valves, and a cylinder head having intake and discharge chambers for a suction pressure zone and a discharge pressure zone.
  • Such compressors are known.
  • the component of the cylinder head that contains the intake and discharge chambers of the compressor is used as a housing sealing cover.
  • Such a cylinder head may be joined to the housing using separate screws or by a single set of threads, as described, for example in German Utility Model 20013202 U1.
  • the object may be achieved by a compressor, in particular for air conditioning systems in motor vehicles, having a housing and a housing sealing cover, a drive shaft including bearings, a drive mechanism for pistons that move back and forth which convert the rotational movement of the drive shaft into a reciprocating movement of the pistons, a cylinder block in which the reciprocating pistons aspirate and compress a coolant, a valve device such as a valve plate having intake and discharge valves, intake and discharge chambers for a suction pressure zone and a discharge pressure zone, whereby on the one hand a cylinder head having the intake and discharge chambers and on the other hand a housing pot or housing cover or a sealing plate of the housing are designed as separate components.
  • a compressor is preferred in which the housing pot or housing cover or the sealing plate, as well as, for example, the housing, are manufactured from steel or comparable materials, while the cylinder head is manufactured from an aluminum material.
  • a compressor according to the present invention is characterized in that the housing is essentially designed as a thin-walled tube and the housing cover as a sheet metal plate or a sheet metal pot, which may have thicker walls.
  • the sealing plate of the compressor or the bottom of the housing cover is elastically deformable, and the sealing plate or the bottom of the housing cover is designed in one area in such a way that a contact force acts on the cylinder head and clamps the cylinder head between the sealing plate or the housing cover and the valve plate.
  • the cylinder head may be designed as an insert between the valve plate and the sealing plate or the housing cover.
  • Another compressor according to the present invention is characterized in that the sealing plate is pressed or screwed against the tubular housing using a threaded ring.
  • Another embodiment of a compressor has the housing sealing cover designed as a pot-shaped sheet steel part having internal threads.
  • a compressor is preferred in which the cylinder head has circumferential sealing webs, which are pressed against the valve plate by the elastic sealing plate or the elastic housing cover bottom.
  • a compressor is preferred in which the pressure conduits of the solenoid valves are welded to the housing cover or the closing plate.
  • a compressor is preferred in which the housing cover or the sealing plate has mounting devices such as eyes or lugs or tabs.
  • the mounting devices may also be used to screw the housing sealing cover to the housing tube by making it possible to apply screw-in torque during assembly.
  • the threads between the threaded ring or the bottom edge of the housing cover and the housing tube part do not apply high stresses to the thicker closing cover or to the cover bottom in the transition to the thin tubular housing.
  • Another compressor according to the present invention is characterized in that the mounting devices such as eyes, lugs or tabs are produced during the forging or extrusion.
  • the objective may further be achieved by a compressor, in particular for air conditioning systems in motor vehicles, having a pot-shaped housing and a housing sealing cover, so that the entire housing area is essentially made of two pieces, a drive shaft including bearings, a drive mechanism for pistons that move back and forth and convert the rotational movement of the drive shaft into a reciprocating movement of the pistons, a cylinder block in which the reciprocating pistons aspirate and compress coolants, a valve device such as a valve plate having intake and discharge valves, intake and discharge chambers for a suction side and a discharge side, the intake and discharge chambers, the intake and discharge valve device and the cylinder block being situated in the closed side of the housing, i.e., in the housing bottom.
  • the housing of the compressor is closed to the outside in the area of the cylinder block and valve plate and has no housing division in this area and accordingly no sealing device to the outside necessitated by it.
  • a compressor is preferred in which the housing/housing cover sealing devices such as threads or ring nuts or screws or flanged joints or welds, etc. are situated on the side of the compressor opposite the greatest heat source.
  • a compressor is preferred in which the shaft lead-through to the outside, the shaft bearings, and the shaft gaskets are situated in the area of the housing cover.
  • a compressor according to the present invention has a spacer between the suction pressure zone and the discharge pressure zone and, if necessary, a second spacer between the discharge pressure zone and the compression chamber pressure zone, which separate the pressure zones and support the cylinder block and the valve plate against the housing bottom.
  • FIG. 3 shows the compressor of the present invention in perspective.
  • FIG. 4 shows another compressor of the present invention having a pot-shaped housing cover.
  • FIG. 6 shows another compressor of the present invention.
  • FIG. 1 A compressor housing according to the present invention is shown in cross-section in FIG. 1 .
  • the compressor housing is made up of a housing bottom 1 , a housing tube 2 , a cylinder block 3 , a cylinder head 4 , two O-ring gaskets 5 and 8 , a housing sealing plate 6 , housing threaded ring 7 , two valve pressure conduits 9 , and one gasket 10 on housing bottom 1 .
  • the drive mechanism parts accommodated in the housing include a shaft, pivot plate, and pistons.
  • a bearing bushing 11 which is situated in housing bottom 1 and may accommodate radial bearings and, if necessary, axial bearings of the shaft.
  • the housing is provided with threads (external or internal threads) to make the transition of thicker sealing plate 6 to tubular housing 2 to be of low stress.
  • this division makes it possible to provide housing bottom 1 with ears 27 (see FIG. 3 ) for mounting during forging or extrusion and to weld pressure conduits 9 and mounting devices 13 to housing sealing plate 6 or cover 30 ( FIG. 4 ) for mounting. If a cover 30 ( FIG. 4 ) is used, the necessary screw-in torque may be applied in these ears (denoted as Number 13 and 27 in FIG. 3 ) during mounting.
  • the separation via threads 12 and 12 b makes it possible to design tubular housing 2 with thinner walls in order to save weight.
  • Cylinder block 3 may be provided with a gasket 5 , an O-ring for example, in order to seal off suction chamber pressure zone 14 from the pressure zone in drive area 15 .
  • cylinder head 4 On its cylinder block side, cylinder head 4 has only two circumferential webs 16 and 18 , which separate high pressure zone 19 , suction chamber pressure zone 14 and drive area pressure zone 20 from each other.
  • the cylinder head contains channels that supply two control valves and one pressure limiting valve.
  • a pressure limiting valve is situated in cylinder head 4 .
  • Pressure conduits 9 of the control valves are welded to sealing plate 6 (laser welding, resistance welding). Sealing plate 6 is sufficiently elastic to absorb the thermal expansion of cylinder head 4 . The force stored in it is primarily transferred via area 21 .
  • the position of area 21 is selected in such a way that it applies the accumulated force via sealing webs 22 , and distributes the force to the two webs 16 and 18 of cylinder head 4 so that a slight deformation or compression of the cylinder head 4 causes a sealing effect.
  • Sealing plate 6 may be held by a threaded ring 7 or be fixedly connected in the form of a cover via threads as shown in FIG. 4 , resulting in a pot-shaped cover 30 .
  • FIGS. 2.1 and 2 . 2 show the seal on the housing bottom and on the housing cover in two detailed views.
  • the seal on the housing cover, i.e., on sealing plate 6 , ring nut 7 , and tubular housing 2 is shown in FIG. 2.1 .
  • Gasket 8 is located in a recess set into sealing plate 6 in the form of a chamfer and is pressed against the top edge of tubular housing 2 when screwed down by threaded ring 7 , which produces the contact force on sealing plate 6 via a round shoulder 24 .
  • the force flux of the screwed connection thus proceeds from tubular housing 2 via threaded ring 7 to shoulder 24 and there presses down on sealing plate 6 . Thermal expansions and deflections of sealing plate 6 are thus not introduced directly into the threaded connection.
  • a compressor housing according to the present invention is shown in perspective from the outside in FIG. 3 .
  • the mounting device produced by the two mounting ears 13 which are used to mount the compressor in a motor vehicle, for example.
  • Sealing plate 6 is again screwed against tubular housing 2 by threaded ring 7 .
  • Mounting ears 27 may be seen on housing bottom 1 which, as mentioned above, is also screwed onto tubular housing 2 , the mounting ears being used to mount the compressor in the area of a belt drive using openings 28 .
  • FIG. 4 Another embodiment of a compressor housing according to the present invention is shown in FIG. 4 .
  • Housing bottom 1 is again screwed to tubular housing 2 via a threaded connection.
  • the housing cover is now represented by a pot-shaped cover 30 which is screwed to housing 2 and in doing so is clamped to and braced against tubular housing 2 via a clamping shoulder 31 of cylinder block 3 .
  • Cylinder block 3 is again sealed off from tubular housing 2 by a gasket device 5 ; another gasket device 8 seals the cylinder block off from housing cover 30 .
  • cover 30 After cover 30 is screwed on, it presses cylinder head 4 and a valve plate 32 against cylinder block 3 .
  • cylinder head 4 contains an oil separator 40 already mentioned above.
  • a pressure conduit 9 of a control valve projecting from housing cover 30 which according to the invention may be welded to cover 30 , thus eliminating a gasket between the control valve and cover to the outside.
  • the elastic bottom of pot-shaped cover 30 is able to absorb thermal stresses within the cylinder head, so that these thermal stresses may be appropriately distributed and reduced on the top of the pot-shaped bottom and thus do not act directly on the threaded connection between tubular housing 2 and pot-shaped cover 30 .
  • varying thermal expansions between cylinder head 4 preferably made from an aluminum material and a preferable steel material of cover 30 do not directly result in thermal stresses in the threaded area between tubular housing 2 and cover 30 , but instead the stresses are appropriately absorbed by the elastic bottom of cover 30 and utilized for the pressing and sealing action of the cylinder head against the valve plate and against the housing cover.
  • FIG. 5.1 The seal between this pot-shaped housing cover 30 , tubular housing 2 , and cylinder block 3 is shown in detail in FIG. 5.1 .
  • the seal between cylinder block 3 and tubular housing 2 is accomplished by gasket 5 in a circumferential O-ring groove.
  • the seal between cylinder block 3 and housing cover 30 is accomplished again by O-ring gasket 8 in a chamfer-like circumferential recess in cylinder block 3 .
  • housing cover 30 is screwed onto tubular housing 2 , the cylinder block is clamped by its clamping shoulder 31 and gasket 8 is also appropriately pretensioned.
  • one part of cover 30 must be supported directly on cylinder block 3 in order to apply the clamping forces for the clamping shoulder and not destroy gasket 8 .
  • Sealing device 10 between housing bottom 1 and tubular housing 2 is shown in detail in FIG. 5.2 and largely corresponds to the depiction in FIG. 2.2 , making any further explanation unnecessary.
  • FIG. 6 shows a compressor 100 , the housing of which is made up of a pot-shaped housing part 102 and a housing sealing cover 103 .
  • a cylinder block 104 is located within housing 102 , a valve plate 105 having suction and discharge valves being located on cylinder block 104 .
  • Valve plate 105 and cylinder block 104 are supported by spacers 106 . 1 and 106 . 2 on bottom 107 of pot-shaped housing part 102 , which is made of one piece.
  • Cylinder block 104 is attached to the housing bottom by fastening elements 108 located in the interior, such as screws, for example, which penetrate spacer 106 . 1 in the cylinder bottom as, for example, through pressure-tight openings 109 .
  • a gasket 116 which seals the gap between housing cover 103 and housing 102 to the outside, is located in the housing cover. This is the only seal of a point of separation of the housing to the outside which, in this case, is located on the cold side of the compressor, i.e., on the side of the compressor opposite the high pressure side.
  • the mechanical connection between housing cover 103 and housing 102 for example, in the form of threads 117 in this case, is located on the cold side of the compressor.
  • gasket 118 located on the hot side of the compressor within the housing, which in this case seals the cylinder block off from the closed housing, will not cause a loss of pressurized medium to the atmosphere.
  • gasket 116 sealing drive area 114 off from the environment is less exposed to thermal and compressive stress and therefore a longer service life may be expected in any case.
  • Spacers 106 . 1 and 106 . 2 which separate the chambers for discharged coolant and aspirated coolant and drive area pressure, may be made up of a plurality of parts and may assume the sealing and insulating functions between hot high pressure zone 119 and cooler suction zone 120 as well as drive area pressure zone 121 .
  • spacers 106 . 1 and 106 . 2 and housing bottom 107 may, if necessary, contain a special thermoinsulation coating. Spacers 106 . 1 and 106 . 2 contain at least partially the intake and discharge chambers and this also may define a cylinder head.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US10/722,956 2001-05-23 2003-11-24 Compressor with pot-shaped housing and housing sealing cover Expired - Fee Related US7004729B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10125266 2001-05-23
DEDE10125266.8 2001-05-23
DEDE10125267.6 2001-05-23
DE10125267 2001-05-23
PCT/DE2002/001814 WO2002095229A1 (de) 2001-05-23 2002-05-21 Verdichter

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/001814 Continuation WO2002095229A1 (de) 2001-05-23 2002-05-21 Verdichter

Publications (2)

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US20040191080A1 US20040191080A1 (en) 2004-09-30
US7004729B2 true US7004729B2 (en) 2006-02-28

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US10/722,956 Expired - Fee Related US7004729B2 (en) 2001-05-23 2003-11-24 Compressor with pot-shaped housing and housing sealing cover

Country Status (6)

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US (1) US7004729B2 (de)
JP (1) JP4170770B2 (de)
DE (2) DE10292227D2 (de)
FR (1) FR2825122B1 (de)
IT (1) ITMI20021107A1 (de)
WO (1) WO2002095229A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8398385B2 (en) 2007-12-27 2013-03-19 Acc Austria Gmbh Refrigerant compressor
US20160115955A1 (en) * 2014-10-28 2016-04-28 Emerson Climate Technologies, Inc. Compressor shell assembly

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2193273B1 (de) * 2007-10-02 2011-02-16 Ixetic Bad Homburg GmbH Hubkolbenmaschine
DE102008025327B4 (de) * 2008-05-27 2010-09-09 Danfoss A/S Kältemittelverdichter
DE102011114904A1 (de) 2011-10-05 2013-04-11 Ixetic Bad Homburg Gmbh Verdichter mit Druckentlastungsnut
JP6060032B2 (ja) * 2013-04-23 2017-01-11 株式会社神戸製鋼所 圧縮機

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278110A (en) 1964-10-19 1966-10-11 Gen Motors Corp Compressor
US3312169A (en) * 1965-01-18 1967-04-04 Bendix Corp Pump
US3557664A (en) * 1968-07-16 1971-01-26 Nissan Motor Cylindrical reciprocating compressor of horizontal type for a car cooler of an automobile
US3712759A (en) * 1971-01-04 1973-01-23 Mitchell J Co Lubricating system for multiple piston compressor units and driven parts thereof
USRE27844E (en) * 1972-09-18 1973-12-18 Compressor unit with self-contained drive means
US4065229A (en) * 1976-10-01 1977-12-27 General Motors Corporation Variable capacity radial-4 compressor
US4095921A (en) 1976-10-14 1978-06-20 Sankyo Electric Co., Ltd. Multi-cylinder compressor having spaced arrays of cylinders
US4544332A (en) * 1982-08-12 1985-10-01 Diesel Kiki Co., Ltd. Double acting type compressor
US4683803A (en) * 1986-01-13 1987-08-04 General Motors Corporation Swash plate compressor having integral shoe and ball
US4789311A (en) * 1986-12-26 1988-12-06 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Swash plate type compressor
US5127314A (en) * 1990-11-30 1992-07-07 General Motors Corporation Compensating cam socket plate torque restraint assembly for a variable displacement compressor
DE20013202U1 (de) 2000-03-03 2001-01-18 Luk Fahrzeug-Hydraulik Gmbh & Co Kg, 61352 Bad Homburg Hubkolbenmaschine
EP1074734A2 (de) 1999-08-04 2001-02-07 Pierburg Aktiengesellschaft Axialkolbenpumpe
EP1091123A2 (de) 1999-10-04 2001-04-11 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Gehäuse eines Taumelscheibenkompressors
US6247322B1 (en) * 1998-10-05 2001-06-19 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Air conditioning systems
US6250204B1 (en) * 1997-03-03 2001-06-26 Luk Fahrzeug-Hydraulik Gmbh & Co., Kg Compressor, in particular for a vehicle air conditioning system
WO2001065070A2 (de) 2000-03-03 2001-09-07 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Hubkolbenmaschine

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278110A (en) 1964-10-19 1966-10-11 Gen Motors Corp Compressor
US3312169A (en) * 1965-01-18 1967-04-04 Bendix Corp Pump
US3557664A (en) * 1968-07-16 1971-01-26 Nissan Motor Cylindrical reciprocating compressor of horizontal type for a car cooler of an automobile
US3712759A (en) * 1971-01-04 1973-01-23 Mitchell J Co Lubricating system for multiple piston compressor units and driven parts thereof
USRE27844E (en) * 1972-09-18 1973-12-18 Compressor unit with self-contained drive means
US4065229A (en) * 1976-10-01 1977-12-27 General Motors Corporation Variable capacity radial-4 compressor
US4095921A (en) 1976-10-14 1978-06-20 Sankyo Electric Co., Ltd. Multi-cylinder compressor having spaced arrays of cylinders
US4544332A (en) * 1982-08-12 1985-10-01 Diesel Kiki Co., Ltd. Double acting type compressor
US4683803A (en) * 1986-01-13 1987-08-04 General Motors Corporation Swash plate compressor having integral shoe and ball
US4789311A (en) * 1986-12-26 1988-12-06 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Swash plate type compressor
US5127314A (en) * 1990-11-30 1992-07-07 General Motors Corporation Compensating cam socket plate torque restraint assembly for a variable displacement compressor
US6250204B1 (en) * 1997-03-03 2001-06-26 Luk Fahrzeug-Hydraulik Gmbh & Co., Kg Compressor, in particular for a vehicle air conditioning system
US6247322B1 (en) * 1998-10-05 2001-06-19 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Air conditioning systems
EP1074734A2 (de) 1999-08-04 2001-02-07 Pierburg Aktiengesellschaft Axialkolbenpumpe
EP1091123A2 (de) 1999-10-04 2001-04-11 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Gehäuse eines Taumelscheibenkompressors
DE20013202U1 (de) 2000-03-03 2001-01-18 Luk Fahrzeug-Hydraulik Gmbh & Co Kg, 61352 Bad Homburg Hubkolbenmaschine
WO2001065070A2 (de) 2000-03-03 2001-09-07 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Hubkolbenmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP 2001065447 (Patent Abstract of Japan).

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8398385B2 (en) 2007-12-27 2013-03-19 Acc Austria Gmbh Refrigerant compressor
US20160115955A1 (en) * 2014-10-28 2016-04-28 Emerson Climate Technologies, Inc. Compressor shell assembly
US10006287B2 (en) * 2014-10-28 2018-06-26 Emerson Climate Technologies, Inc. Compressor shell assembly

Also Published As

Publication number Publication date
DE10292227D2 (de) 2004-04-29
JP2004525309A (ja) 2004-08-19
ITMI20021107A0 (it) 2002-05-22
JP4170770B2 (ja) 2008-10-22
DE10222341A1 (de) 2002-11-28
ITMI20021107A1 (it) 2003-11-24
FR2825122B1 (fr) 2006-01-13
FR2825122A1 (fr) 2002-11-29
WO2002095229A1 (de) 2002-11-28
US20040191080A1 (en) 2004-09-30

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